/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:48:06,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:48:06,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:48:06,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:48:06,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:48:06,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:48:06,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:48:06,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:48:06,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:48:06,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:48:06,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:48:06,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:48:06,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:48:06,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:48:06,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:48:06,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:48:06,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:48:06,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:48:06,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:48:06,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:48:06,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:48:06,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:48:06,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:48:06,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:48:06,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:48:06,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:48:06,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:48:06,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:48:06,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:48:06,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:48:06,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:48:06,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:48:06,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:48:06,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:48:06,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:48:06,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:48:06,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:48:06,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:48:06,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:48:06,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:48:06,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:48:06,318 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:48:06,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:48:06,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:48:06,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:48:06,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:48:06,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:48:06,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:48:06,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:48:06,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:48:06,320 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:48:06,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:48:06,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:48:06,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:48:06,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:48:06,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:48:06,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:48:06,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:48:06,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:48:06,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:48:06,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:48:06,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:48:06,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:48:06,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:48:06,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:48:06,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:48:06,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:48:06,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:48:06,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:48:06,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:48:06,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:48:06,752 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:48:06,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-11-09 12:48:06,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4984e491/7c9260c8b805432abf410c050e171892/FLAGca57cface [2020-11-09 12:48:07,597 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:48:07,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-11-09 12:48:07,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4984e491/7c9260c8b805432abf410c050e171892/FLAGca57cface [2020-11-09 12:48:07,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4984e491/7c9260c8b805432abf410c050e171892 [2020-11-09 12:48:07,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:48:07,845 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:48:07,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:48:07,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:48:07,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:48:07,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:48:07" (1/1) ... [2020-11-09 12:48:07,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bf5314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:07, skipping insertion in model container [2020-11-09 12:48:07,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:48:07" (1/1) ... [2020-11-09 12:48:07,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:48:07,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:48:08,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:48:08,497 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:48:08,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:48:08,634 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:48:08,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:08 WrapperNode [2020-11-09 12:48:08,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:48:08,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:48:08,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:48:08,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:48:08,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:08" (1/1) ... [2020-11-09 12:48:08,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:08" (1/1) ... [2020-11-09 12:48:08,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:48:08,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:48:08,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:48:08,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:48:08,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:08" (1/1) ... [2020-11-09 12:48:08,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:08" (1/1) ... [2020-11-09 12:48:08,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:08" (1/1) ... [2020-11-09 12:48:08,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:08" (1/1) ... [2020-11-09 12:48:08,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:08" (1/1) ... [2020-11-09 12:48:08,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:08" (1/1) ... [2020-11-09 12:48:08,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:08" (1/1) ... [2020-11-09 12:48:08,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:48:08,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:48:08,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:48:08,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:48:08,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:48:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:48:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:48:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:48:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:48:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:48:08,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:48:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:48:08,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:48:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:48:08,794 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:48:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:48:08,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:48:08,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:48:08,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:48:08,797 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:48:09,271 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:48:09,271 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:48:09,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:48:09 BoogieIcfgContainer [2020-11-09 12:48:09,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:48:09,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:48:09,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:48:09,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:48:09,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:48:07" (1/3) ... [2020-11-09 12:48:09,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e1d6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:48:09, skipping insertion in model container [2020-11-09 12:48:09,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:48:08" (2/3) ... [2020-11-09 12:48:09,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e1d6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:48:09, skipping insertion in model container [2020-11-09 12:48:09,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:48:09" (3/3) ... [2020-11-09 12:48:09,283 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.oepc.i [2020-11-09 12:48:09,299 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:48:09,299 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:48:09,303 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:48:09,304 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:48:09,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,336 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,336 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,337 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,337 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,337 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,337 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,339 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,340 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,340 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,340 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,341 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,344 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,344 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,348 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,349 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,355 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,355 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,356 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,356 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,361 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:48:09,364 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:48:09,377 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:48:09,401 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:48:09,402 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:48:09,402 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:48:09,402 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:48:09,402 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:48:09,402 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:48:09,402 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:48:09,403 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:48:09,416 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:48:09,419 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 12:48:09,422 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 12:48:09,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 12:48:09,489 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 12:48:09,489 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:48:09,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-09 12:48:09,499 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-09 12:48:12,630 WARN L194 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-11-09 12:48:12,851 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-11-09 12:48:13,250 WARN L194 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 12:48:13,362 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 12:48:13,580 WARN L194 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 12:48:13,696 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 12:48:13,871 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:48:14,009 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:48:14,121 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:48:14,249 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:48:14,255 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-11-09 12:48:14,255 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-09 12:48:14,265 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 12:48:14,311 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-11-09 12:48:14,313 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-11-09 12:48:14,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:48:14,323 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:14,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:14,325 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:14,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:14,338 INFO L82 PathProgramCache]: Analyzing trace with hash 911607414, now seen corresponding path program 1 times [2020-11-09 12:48:14,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:14,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091003658] [2020-11-09 12:48:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:48:14,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091003658] [2020-11-09 12:48:14,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:14,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:48:14,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748114243] [2020-11-09 12:48:14,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 12:48:14,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:14,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 12:48:14,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:48:14,679 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-11-09 12:48:14,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:14,741 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-11-09 12:48:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 12:48:14,745 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 12:48:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:14,771 INFO L225 Difference]: With dead ends: 274 [2020-11-09 12:48:14,771 INFO L226 Difference]: Without dead ends: 226 [2020-11-09 12:48:14,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:48:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-09 12:48:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-09 12:48:14,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-09 12:48:14,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-11-09 12:48:14,843 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-11-09 12:48:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:14,845 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-11-09 12:48:14,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 12:48:14,845 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-11-09 12:48:14,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:48:14,847 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:14,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:14,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:48:14,848 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:14,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:14,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1804948320, now seen corresponding path program 1 times [2020-11-09 12:48:14,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:14,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465445614] [2020-11-09 12:48:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:48:14,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465445614] [2020-11-09 12:48:14,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:14,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:48:14,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117224774] [2020-11-09 12:48:14,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:48:14,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:14,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:48:14,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:48:14,999 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-11-09 12:48:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:15,032 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-11-09 12:48:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:48:15,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 12:48:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:15,036 INFO L225 Difference]: With dead ends: 250 [2020-11-09 12:48:15,036 INFO L226 Difference]: Without dead ends: 202 [2020-11-09 12:48:15,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:48:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-09 12:48:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-09 12:48:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-09 12:48:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-11-09 12:48:15,076 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-11-09 12:48:15,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:15,079 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-11-09 12:48:15,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:48:15,080 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-11-09 12:48:15,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:48:15,081 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:15,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:15,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:48:15,084 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:15,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:15,085 INFO L82 PathProgramCache]: Analyzing trace with hash -119834399, now seen corresponding path program 1 times [2020-11-09 12:48:15,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:15,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057038430] [2020-11-09 12:48:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:48:15,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057038430] [2020-11-09 12:48:15,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:15,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:48:15,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058229704] [2020-11-09 12:48:15,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:48:15,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:15,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:48:15,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:48:15,195 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-11-09 12:48:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:15,275 INFO L93 Difference]: Finished difference Result 220 states and 576 transitions. [2020-11-09 12:48:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:48:15,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-09 12:48:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:15,280 INFO L225 Difference]: With dead ends: 220 [2020-11-09 12:48:15,280 INFO L226 Difference]: Without dead ends: 184 [2020-11-09 12:48:15,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:48:15,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-09 12:48:15,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2020-11-09 12:48:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-09 12:48:15,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 492 transitions. [2020-11-09 12:48:15,298 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 492 transitions. Word has length 10 [2020-11-09 12:48:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:15,298 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 492 transitions. [2020-11-09 12:48:15,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:48:15,299 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 492 transitions. [2020-11-09 12:48:15,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:48:15,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:15,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:15,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:48:15,301 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:15,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:15,302 INFO L82 PathProgramCache]: Analyzing trace with hash 83805114, now seen corresponding path program 1 times [2020-11-09 12:48:15,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:15,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539934837] [2020-11-09 12:48:15,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:48:15,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539934837] [2020-11-09 12:48:15,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:15,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:48:15,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914733398] [2020-11-09 12:48:15,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:48:15,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:15,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:48:15,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:48:15,385 INFO L87 Difference]: Start difference. First operand 184 states and 492 transitions. Second operand 5 states. [2020-11-09 12:48:15,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:15,480 INFO L93 Difference]: Finished difference Result 241 states and 629 transitions. [2020-11-09 12:48:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:48:15,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-09 12:48:15,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:15,483 INFO L225 Difference]: With dead ends: 241 [2020-11-09 12:48:15,484 INFO L226 Difference]: Without dead ends: 142 [2020-11-09 12:48:15,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 12:48:15,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-09 12:48:15,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-11-09 12:48:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-09 12:48:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-11-09 12:48:15,507 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 11 [2020-11-09 12:48:15,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:15,508 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-11-09 12:48:15,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:48:15,511 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-11-09 12:48:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:48:15,513 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:15,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:15,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:48:15,513 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:15,516 INFO L82 PathProgramCache]: Analyzing trace with hash -976750188, now seen corresponding path program 1 times [2020-11-09 12:48:15,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:15,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181207234] [2020-11-09 12:48:15,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:15,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:48:15,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181207234] [2020-11-09 12:48:15,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:15,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:48:15,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736504783] [2020-11-09 12:48:15,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:48:15,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:15,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:48:15,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:48:15,655 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 5 states. [2020-11-09 12:48:15,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:15,728 INFO L93 Difference]: Finished difference Result 172 states and 419 transitions. [2020-11-09 12:48:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:48:15,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 12:48:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:15,729 INFO L225 Difference]: With dead ends: 172 [2020-11-09 12:48:15,729 INFO L226 Difference]: Without dead ends: 76 [2020-11-09 12:48:15,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 12:48:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-09 12:48:15,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-11-09 12:48:15,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-09 12:48:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-11-09 12:48:15,742 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-11-09 12:48:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:15,743 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-11-09 12:48:15,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:48:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-11-09 12:48:15,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:48:15,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:15,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:15,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:48:15,749 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:15,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:15,750 INFO L82 PathProgramCache]: Analyzing trace with hash -254241509, now seen corresponding path program 1 times [2020-11-09 12:48:15,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:15,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515813935] [2020-11-09 12:48:15,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:48:15,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515813935] [2020-11-09 12:48:15,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:15,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:48:15,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408999029] [2020-11-09 12:48:15,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:48:15,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:15,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:48:15,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:48:15,882 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-11-09 12:48:15,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:15,915 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-11-09 12:48:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:48:15,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 12:48:15,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:15,917 INFO L225 Difference]: With dead ends: 87 [2020-11-09 12:48:15,917 INFO L226 Difference]: Without dead ends: 66 [2020-11-09 12:48:15,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:48:15,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-09 12:48:15,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-09 12:48:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-09 12:48:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-11-09 12:48:15,922 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-11-09 12:48:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:15,922 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-11-09 12:48:15,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:48:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-11-09 12:48:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:48:15,923 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:15,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:15,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:48:15,923 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:15,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:15,924 INFO L82 PathProgramCache]: Analyzing trace with hash 734665460, now seen corresponding path program 1 times [2020-11-09 12:48:15,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:15,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973442676] [2020-11-09 12:48:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:48:15,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973442676] [2020-11-09 12:48:15,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:15,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:48:15,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252979163] [2020-11-09 12:48:15,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:48:15,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:15,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:48:15,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:48:15,994 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 5 states. [2020-11-09 12:48:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:16,035 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-11-09 12:48:16,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:48:16,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 12:48:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:16,037 INFO L225 Difference]: With dead ends: 62 [2020-11-09 12:48:16,037 INFO L226 Difference]: Without dead ends: 47 [2020-11-09 12:48:16,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:48:16,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-09 12:48:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-09 12:48:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-09 12:48:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-11-09 12:48:16,040 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-11-09 12:48:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:16,040 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-11-09 12:48:16,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:48:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-11-09 12:48:16,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:48:16,041 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:16,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:16,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:48:16,042 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:16,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1299079363, now seen corresponding path program 1 times [2020-11-09 12:48:16,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:16,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282969232] [2020-11-09 12:48:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:48:16,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282969232] [2020-11-09 12:48:16,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:16,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 12:48:16,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157136747] [2020-11-09 12:48:16,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:48:16,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:16,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:48:16,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:48:16,149 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-11-09 12:48:16,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:16,208 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-11-09 12:48:16,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:48:16,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 12:48:16,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:16,210 INFO L225 Difference]: With dead ends: 40 [2020-11-09 12:48:16,210 INFO L226 Difference]: Without dead ends: 34 [2020-11-09 12:48:16,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:48:16,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-09 12:48:16,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-09 12:48:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-09 12:48:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-11-09 12:48:16,212 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-11-09 12:48:16,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:16,213 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-11-09 12:48:16,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:48:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-11-09 12:48:16,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:48:16,214 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:48:16,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:48:16,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:48:16,215 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:48:16,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:48:16,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1284707522, now seen corresponding path program 1 times [2020-11-09 12:48:16,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:48:16,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227225491] [2020-11-09 12:48:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:48:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:48:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:48:16,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227225491] [2020-11-09 12:48:16,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:48:16,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:48:16,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902304771] [2020-11-09 12:48:16,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:48:16,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:48:16,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:48:16,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:48:16,325 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2020-11-09 12:48:16,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:48:16,360 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-11-09 12:48:16,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:48:16,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-09 12:48:16,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:48:16,361 INFO L225 Difference]: With dead ends: 33 [2020-11-09 12:48:16,361 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:48:16,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:48:16,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:48:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:48:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:48:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:48:16,363 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 12:48:16,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:48:16,363 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:48:16,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:48:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:48:16,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:48:16,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 12:48:16,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:48:16 BasicIcfg [2020-11-09 12:48:16,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:48:16,371 INFO L168 Benchmark]: Toolchain (without parser) took 8531.29 ms. Allocated memory was 158.3 MB in the beginning and 201.3 MB in the end (delta: 43.0 MB). Free memory was 111.7 MB in the beginning and 156.9 MB in the end (delta: -45.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:48:16,371 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory is still 130.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:48:16,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.69 ms. Allocated memory is still 158.3 MB. Free memory was 111.1 MB in the beginning and 120.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2020-11-09 12:48:16,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.35 ms. Allocated memory is still 158.3 MB. Free memory was 120.7 MB in the beginning and 118.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:48:16,380 INFO L168 Benchmark]: Boogie Preprocessor took 28.61 ms. Allocated memory is still 158.3 MB. Free memory was 118.6 MB in the beginning and 117.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:48:16,385 INFO L168 Benchmark]: RCFGBuilder took 558.02 ms. Allocated memory is still 158.3 MB. Free memory was 117.1 MB in the beginning and 95.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:48:16,387 INFO L168 Benchmark]: TraceAbstraction took 7093.23 ms. Allocated memory was 158.3 MB in the beginning and 201.3 MB in the end (delta: 43.0 MB). Free memory was 95.0 MB in the beginning and 156.9 MB in the end (delta: -61.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:48:16,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory is still 130.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 785.69 ms. Allocated memory is still 158.3 MB. Free memory was 111.1 MB in the beginning and 120.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.35 ms. Allocated memory is still 158.3 MB. Free memory was 120.7 MB in the beginning and 118.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.61 ms. Allocated memory is still 158.3 MB. Free memory was 118.6 MB in the beginning and 117.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 558.02 ms. Allocated memory is still 158.3 MB. Free memory was 117.1 MB in the beginning and 95.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7093.23 ms. Allocated memory was 158.3 MB in the beginning and 201.3 MB in the end (delta: 43.0 MB). Free memory was 95.0 MB in the beginning and 156.9 MB in the end (delta: -61.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 949 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.8s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2462 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 166 SDtfs, 183 SDslu, 266 SDs, 0 SdLazy, 145 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3675 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...